Suntest IRDS-SA. Strain Gauge Conditioner Module

Manufacturer: Suntest Co.,Ltd
Model: IRDS-SA

This is a slave module for measuring load cell or pressure transducer of IRD series.　Possible to select 1 or 2 channels, and to connect with load cell or pressure transducer of 120Ω-1kΩ.
Parameters can be changed through IRD master module over host industrial network or the dedicated Windows software (IRD Manager).

IRDS-SA10 : one channel type
IRDS-SA20 : two channels type
The data is transferred to the industrial network through IRD master module. (CC-Link, EtherNet/IP, PROFIBUS)
Possible to have analogue or digital output from other slave modules in IRD system. (IRDS-AIO, AO4 and DO)
Giving bridge voltage 2V or 5V to load cell and converting voltage output from the load cell to digital data.
Possible to preset through IRD master module or host industrial network.
With scaling full voltage range (no matter which bridge voltage) with 16bit, it is not necessary to make calculation for each unit even the bridge voltages are different.
In case of using 6-wires load cell with long cable, compensating the bridge voltage o load cell and keep it stable by feedback the given bridge voltage.
Thanks to ratiometric measurement based on GND, no influence from temp. variation and time variation.
Possible to set upper and lower limit output.
Self diagnosis function : internal IC error, cable error
RoHS compliant

Model

IRDS (1) – SA (2) (3) – (4)

(1) series
IRDS : IRD slave module

(2) module function
SA : Strain gauge conditioner module

(3) Number of sensors

10	: one channel
20	: two channels

(4) special specification code

blank	: standard
others	: customer’s special option

Occupied memory block and input / output bytes

Module series	Memory block	Input byte	Output byte
IRDS-SA	4	16	16

Specifications

Items		IRDS-SA10	IRDS-SA20
Sensor detection	number of sensor	one channel	two channels
	connectable transducer	4-wire or 6-wire strain gauge transducer Load-cells or pressure transducer
	bridge voltage	DC 2V or 5V (can be changed by user) Max. 60mA for each axis
	max. analogue input	±18mV (up to ±3.5mV/V transducer in 5V bridge voltage) (up to ±8.75mV/V transducer in 2V bridge voltage)
	resolution	0.6μV (16bit for full scale)
	update cycle	0.2ms
	zero drift	≤0.1μV/°CRTI
	gain drift	≤±10ppm/°C
	non-linearity	≤0.01%FS
	low pass filter	10Hz / 25Hz / 50Hz / 100Hz / 500Hz / 1kHz / None (1 degree IIR low-pass)
	preset range	Within any range (digital preset)
Isolation	specification	The inside circuit is isolated from power supply. Withstand voltage 500VAC for one minute.
Power supply	rating	DC24V (±10%) 100mA supplied by IRDM (master module)